Publicação
Tertiary and Quaternary north of the Douro river (Portugal): the geologic record and the geomorphologic setting
| Resumo: | In northernmost area of Portugal the Tertiary and Quaternary record occurs on two different morphotectonic settings: (1) the eastern area (Trás-os-Montes region) and (2) the western, next Atlantic margin (Minho region). Sedimentology and geomorphology allowed mapping of the drainage changes and a description of the depositional systems. The sedimentological information includes lithofacies description and analytical results (texture, grain size, clast analysis, heavy and 2µm mineral associations). Based on these studies four main cycles were distinguished. In the eastern area the sedimentary record comprises the Paleogene and the Miocene. The Paleogene cycle represents an alluvial fans system kept in strike-slip basins. In the Miocene cycle are recognised two Tectonic Sedimentary Units, both recording the proximal facies of a braided fluvial system. This endorheic system was draining to the Douro Basin (Spain). The Atlantic capture of the drainage promotes glyptogenesis and the sedimentary record became scarce. In the western area, near the Atlantic Ocean, the sedimentary record is geographic and stratigraphic limited (Late Pliocene and Quaternary). In this area sedimentation is related to exorheic drainage, formerly stored in depressions. During the Quaternary cycle, fluvial terraces are generated. Consequently are defined four main sedimentary cycles, during Paleogene, Miocene, Late Pliocene and Quaternary. The tectonic activity controlled sedimentation and preservation of the older sedimentary record in eastern area. Lesser tectonic activity and greater glyptogenesis/sedimentogenesis ratio justified the narrow and newer record in western area. |
|---|---|
| Autores principais: | Alves, M. I. Caetano |
| Outros Autores: | Pereira, D. I. |
| Assunto: | Geology and landscape Portugal N Fluvial sediments Tertiary and Quaternary Ciências Naturais::Ciências da Terra e do Ambiente |
| Ano: | 2000 |
| País: | Portugal |
| Tipo de documento: | outro |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| _version_ | 1867438608593453056 |
|---|---|
| author | Alves, M. I. Caetano |
| author2 | Pereira, D. I. |
| author2_role | author |
| author_facet | Alves, M. I. Caetano Pereira, D. I. |
| author_role | author |
| contributor_name_str_mv | RepositóriUM - Universidade do Minho |
| country_str | PT |
| creators_json_txt | [{\"Person.name\":\"Alves, M. I. Caetano\"},{\"Person.name\":\"Pereira, D. I.\"}] |
| datacite.contributors.contributor.contributorName.fl_str_mv | RepositóriUM - Universidade do Minho |
| datacite.creators.creator.creatorName.fl_str_mv | Alves, M. I. Caetano Pereira, D. I. |
| datacite.date.Accepted.fl_str_mv | 2000-01-01T00:00:00Z |
| datacite.date.available.fl_str_mv | 2022-06-08T14:54:56Z |
| datacite.date.embargoed.fl_str_mv | 2022-06-08T14:54:56Z |
| datacite.rights.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| datacite.subjects.subject.fl_str_mv | Geology and landscape Portugal N Fluvial sediments Tertiary and Quaternary Ciências Naturais::Ciências da Terra e do Ambiente |
| datacite.titles.title.fl_str_mv | Tertiary and Quaternary north of the Douro river (Portugal): the geologic record and the geomorphologic setting Terciário e Quaternário a norte do rio Douro (Portugal): o registo geológico e enquadramento geomorfológico |
| dc.contributor.none.fl_str_mv | RepositóriUM - Universidade do Minho |
| dc.creator.none.fl_str_mv | Alves, M. I. Caetano Pereira, D. I. |
| dc.date.Accepted.fl_str_mv | 2000-01-01T00:00:00Z |
| dc.date.available.fl_str_mv | 2022-06-08T14:54:56Z |
| dc.date.embargoed.fl_str_mv | 2022-06-08T14:54:56Z |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | https://hdl.handle.net/1822/78305 |
| dc.language.none.fl_str_mv | eng |
| dc.publisher.none.fl_str_mv | Associação Portuguesa para o Estudo do Quaternário (APEQ) |
| dc.rights.none.fl_str_mv | http://purl.org/coar/access_right/c_abf2 |
| dc.subject.none.fl_str_mv | Geology and landscape Portugal N Fluvial sediments Tertiary and Quaternary Ciências Naturais::Ciências da Terra e do Ambiente |
| dc.title.fl_str_mv | Tertiary and Quaternary north of the Douro river (Portugal): the geologic record and the geomorphologic setting Terciário e Quaternário a norte do rio Douro (Portugal): o registo geológico e enquadramento geomorfológico |
| dc.type.none.fl_str_mv | http://purl.org/coar/resource_type/c_1843 |
| description | In northernmost area of Portugal the Tertiary and Quaternary record occurs on two different morphotectonic settings: (1) the eastern area (Trás-os-Montes region) and (2) the western, next Atlantic margin (Minho region). Sedimentology and geomorphology allowed mapping of the drainage changes and a description of the depositional systems. The sedimentological information includes lithofacies description and analytical results (texture, grain size, clast analysis, heavy and 2µm mineral associations). Based on these studies four main cycles were distinguished. In the eastern area the sedimentary record comprises the Paleogene and the Miocene. The Paleogene cycle represents an alluvial fans system kept in strike-slip basins. In the Miocene cycle are recognised two Tectonic Sedimentary Units, both recording the proximal facies of a braided fluvial system. This endorheic system was draining to the Douro Basin (Spain). The Atlantic capture of the drainage promotes glyptogenesis and the sedimentary record became scarce. In the western area, near the Atlantic Ocean, the sedimentary record is geographic and stratigraphic limited (Late Pliocene and Quaternary). In this area sedimentation is related to exorheic drainage, formerly stored in depressions. During the Quaternary cycle, fluvial terraces are generated. Consequently are defined four main sedimentary cycles, during Paleogene, Miocene, Late Pliocene and Quaternary. The tectonic activity controlled sedimentation and preservation of the older sedimentary record in eastern area. Lesser tectonic activity and greater glyptogenesis/sedimentogenesis ratio justified the narrow and newer record in western area. |
| dirty | 0 |
| eu_rights_str_mv | openAccess |
| format | other |
| fulltext.url.fl_str_mv | https://repositorium.uminho.pt/bitstreams/b3f20d1d-dab9-4492-a1c2-01bfde4ddd28/download |
| id | rum_ffdcd2962fc336076d1a30cefbd3f29e |
| identifier.url.fl_str_mv | https://hdl.handle.net/1822/78305 |
| instacron_str | repositorium |
| institution | Universidade do Minho |
| instname_str | Universidade do Minho |
| language | eng |
| network_acronym_str | rum |
| network_name_str | RepositóriUM - Universidade do Minho |
| oai_identifier_str | oai:repositorium.uminho.pt:1822/78305 |
| organization_str_mv | urn:organizationAcronym:repositorium |
| person_str_mv | Alves, M. I. Caetano Pereira, D. I. |
| publishDate | 2000 |
| publisher.none.fl_str_mv | Associação Portuguesa para o Estudo do Quaternário (APEQ) |
| reponame_str | RepositóriUM - Universidade do Minho |
| repository_id_str | urn:repositoryAcronym:rum |
| service_str_mv | urn:repositoryAcronym:rum |
| spelling | engAssociação Portuguesa para o Estudo do Quaternário (APEQ)porIn northernmost area of Portugal the Tertiary and Quaternary record occurs on two different morphotectonic settings: (1) the eastern area (Trás-os-Montes region) and (2) the western, next Atlantic margin (Minho region). Sedimentology and geomorphology allowed mapping of the drainage changes and a description of the depositional systems. The sedimentological information includes lithofacies description and analytical results (texture, grain size, clast analysis, heavy and 2µm mineral associations). Based on these studies four main cycles were distinguished. In the eastern area the sedimentary record comprises the Paleogene and the Miocene. The Paleogene cycle represents an alluvial fans system kept in strike-slip basins. In the Miocene cycle are recognised two Tectonic Sedimentary Units, both recording the proximal facies of a braided fluvial system. This endorheic system was draining to the Douro Basin (Spain). The Atlantic capture of the drainage promotes glyptogenesis and the sedimentary record became scarce. In the western area, near the Atlantic Ocean, the sedimentary record is geographic and stratigraphic limited (Late Pliocene and Quaternary). In this area sedimentation is related to exorheic drainage, formerly stored in depressions. During the Quaternary cycle, fluvial terraces are generated. Consequently are defined four main sedimentary cycles, during Paleogene, Miocene, Late Pliocene and Quaternary. The tectonic activity controlled sedimentation and preservation of the older sedimentary record in eastern area. Lesser tectonic activity and greater glyptogenesis/sedimentogenesis ratio justified the narrow and newer record in western area.application/pdfporTertiary and Quaternary north of the Douro river (Portugal): the geologic record and the geomorphologic settingAlternativeTitleporTerciário e Quaternário a norte do rio Douro (Portugal): o registo geológico e enquadramento geomorfológicoAlves, M. I. CaetanoPereira, D. I.HostingInstitutionOrganizationalRepositóriUM - Universidade do Minhoe-mailmailto:repositorium@usdb.uminho.ptrepositorium@usdb.uminho.pt2022-06-08T14:54:56Z20002000-01-01T00:00:00ZHandlehttps://hdl.handle.net/1822/78305http://purl.org/coar/access_right/c_abf2open accessGeology and landscapePortugal NFluvial sedimentsTertiary and Quaternaryhttp://www.oecd.org/science/inno/38235147.pdfFields of Science and Technology (FOS)Ciências Naturais::Ciências da Terra e do Ambiente541687 bytesother research producthttp://purl.org/coar/resource_type/c_1843otherhttp://purl.org/coar/access_right/c_abf2application/pdffulltexthttps://repositorium.uminho.pt/bitstreams/b3f20d1d-dab9-4492-a1c2-01bfde4ddd28/download |
| spellingShingle | Tertiary and Quaternary north of the Douro river (Portugal): the geologic record and the geomorphologic setting Alves, M. I. Caetano Geology and landscape Portugal N Fluvial sediments Tertiary and Quaternary Ciências Naturais::Ciências da Terra e do Ambiente |
| status | SINGLETON |
| subject.fl_str_mv | Geology and landscape Portugal N Fluvial sediments Tertiary and Quaternary |
| subject.other.fl_str_mv | Ciências Naturais::Ciências da Terra e do Ambiente |
| title | Tertiary and Quaternary north of the Douro river (Portugal): the geologic record and the geomorphologic setting |
| title_full | Tertiary and Quaternary north of the Douro river (Portugal): the geologic record and the geomorphologic setting |
| title_fullStr | Tertiary and Quaternary north of the Douro river (Portugal): the geologic record and the geomorphologic setting |
| title_full_unstemmed | Tertiary and Quaternary north of the Douro river (Portugal): the geologic record and the geomorphologic setting |
| title_short | Tertiary and Quaternary north of the Douro river (Portugal): the geologic record and the geomorphologic setting |
| title_sort | Tertiary and Quaternary north of the Douro river (Portugal): the geologic record and the geomorphologic setting |
| topic | Geology and landscape Portugal N Fluvial sediments Tertiary and Quaternary Ciências Naturais::Ciências da Terra e do Ambiente |
| topic_facet | Geology and landscape Portugal N Fluvial sediments Tertiary and Quaternary Ciências Naturais::Ciências da Terra e do Ambiente |
| url | https://hdl.handle.net/1822/78305 |
| visible | 1 |